Types of cancerCancer is not a unitary disease but a large group of diseases that include many different cancers. Their causes, symptoms and forms of treatment differ from one another. The most common cancer among women is breast cancer. The second is colorectal cancer, and the third is lung cancer. Among men, the most usual form of cancer is prostate cancer. The second is lung cancer and the third is colorectal cancer. The situation of each cancer patient is unique, which is why the symptoms can differ greatly. Cancer types (in Finnish) Further information Medical database Terveyskirjasto (in Finnish) (http://www.terveyskirjasto.fi/terveyskirjasto/tk.koti?p_teos=dlk&p_selaus=7841&p_osio=#7841) The Finnish Medical Society Duodecim publishes an online medical database that covers a variety of cancer types and their treatments (in Finnish). Patient guides (in Finnish) (http://www.syopapotilaat.fi/potilasoppaat/) The Association of Finnish Cancer Patients offers free of charge patient guides in Finnish and in Swedish.